Peak Flow Meters
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A peak flow meter is an inexpensive, pocket-sized device that measures peak expiratory flow (PEF), or how fast a person can breathe out. To measure PEF, the person takes a deep breath and then blows into a tube on the peak flow meter as hard and as fast as possible. This can be done at home.
Peak flow meters come in many shapes and sizes.
Last Revised: August 26, 2011
Author: Healthwise Staff
Medical Review: Adam Husney, MD, MD - Family Medicine & Sue Barton, PhD, PsyD - Behavioral Health
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